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Oxygen-producing respiratory protection device

A breathing device and oxygen-generating technology, used in respiratory protection devices, life-saving equipment, fire rescue, etc., can solve the problems of restricting the physiological performance of breathing, unable to completely avoid vibration, and difficult to filter cartridges.

Inactive Publication Date: 2008-01-16
MSA EURO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, vibrations cannot be completely avoided by this method because the pleated mesh insert is not spatially stable and can be displaced in the chemical cartridge
Difficult or impossible to evenly fill filter cartridges with particles
However, the respiratory physiology can be more significantly limited after the aforementioned mechanical loading

Method used

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  • Oxygen-producing respiratory protection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The breathing apparatus for oxygen generation includes a breathing bag 1 made of a sealing material, a chemical filter cartridge 2 sealed and fixed in the opening of the breathing bag 1 , and a breathing hose 3 with an interface 4 and a nose clip 5 . The breathing hose 3 is integrally connected to the receptacle 6 enclosing the upper area of ​​the chemical filter cartridge 2 , whereby the chemical filter cartridge 2 is sealed and fixed in the breathing bag 1 by the holder 7 . In inactive use, the breathing apparatus is assembled in a stable sheet metal container, preferably secured to the user's belt. When the wearer of the breathing apparatus finds himself in an environment with unbreathable gas or smoke, he opens the packaging container and inhales and exhales via the interface 4 . CO contained in breathing air 2 with the KO contained in the chemical cartridge 2 2 The particles react to generate heat to generate oxygen, which enters the breathing bag 1 through an op...

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PUM

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Abstract

The invention relates to a respiratory protection device wherein the chemical cartridge through which inhaled air flows in order to produce oxygen is subdivided into a plurality of air treatment compartments (15 to 18) by means of retaining gratings. The outer air treatment compartments (15, 18) are provided with fine copper braid shock-absorbing means (21a, b) that rest flat against the respective cover. The center air treatment compartments (16, 17) are provided with a concertina-folded damping element (24, 25) from a multilayer fine braid having fold edges that extend in parallel and at a distance to the outer wall of the chemical cartridge (2). The one - zigzagged - edge of said damping element is fastened to a wire grating (26, 27). The damping elements of adjacent air treatment compartments are not aligned. The air treatment compartments accommodate potassium peroxide granules (22) for producing oxygen. An air treatment compartment (18) can be filled with lithium hydroxide tablets (23) for binding excess carbon dioxide. The inventive device is immediately operative at high mechanical stress even when it was not actively used for a long time and has a high output.

Description

technical field [0001] The invention relates to an oxygen-generating breathing apparatus, which includes a chemical cartridge through which bidirectional flow occurs, and the chemical cartridge is connected with a breathing hose and a breathing bag. Background technique [0002] In this type of respirator, the user's exhaled air is passed to a chemical located in a canister or chemical cartridge, such as potassium peroxide (KO 2 )superior. As a result of the carbon dioxide present in the exhaled breath reacting with the chemical, oxygen is produced in an exothermic reaction and is transferred from the chemical cartridge to the chemical bag and reinhaled by the user. In this device, inhalation and exhalation take place in so-called pendulum-type breathing via chemical substances and against the resulting resistance, the device is intended as a self-rescue device or assisted escape device for a limited period of use , such as 20 minutes and used alone, for example, in a mine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62B7/08
CPCA62B7/08
Inventor 弗兰克·克鲁格卡尔-汉兹·费尔德内卡尔-汉兹·考瑞查
Owner MSA EURO
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